A Utah man who was trying to kill a mouse ended up shooting one roommate and getting another arrested for child rape, while a fourth roommate slept through the whole thing.

Taylorsville Police Sgt. Tracy Wyant told Deseret News that the first roommate, 27, had been trying to kill a rodent when he missed and the round went through the kitchen wall and struck a second roommate, 28.

"After the gun was fired, both the roommate and Paul heard a scream," Wyant explained.

Officers responding to the scene early Tuesday morning found a 13-year-old girl hiding in a basement closet. She told police she had been having an affair with the third roommate, 34-year-old Paul Daniel Kunzler. During an interview, the Children's Justice Center determined that the girl had been having sex with Kunzler over a period of four months.

He was arrested on suspicion of two counts of rape of a child, three counts of sodomy of a child and three counts of sexual abuse of a child.

A fourth roommate, Zach Baker, told Fox 13 that he slept through the gunfire.

"I got woken up by the cops," Baker said. "They came storming in my room, checking to make sure everybody was OK and nobody was shot or anything like that."

"I'd never seen the girl there before and I don't know how long she'd been there," he added. "They said she'd been hiding in a closet and that creeps me out. ... I knew the guy was weird, but I didn't expect anything like that to happen."

The roommate who was shot in the chest was taken to a local hospital, and was later upgraded from serious to stable condition, according to KSL. The roommate who fired the gun was not arrested. Charges could be possible after prosecutors review the case.

Police said they suspected alcohol was involved.

Watch this video from KSL, broadcast Dec. 21, 2011.

Photo: Salt Lake City County Jail

(H/T: Mediaite)